I have a 2003 5.4 V8 and I am trying to find out what the max towing is for that truck. I am looking at a two horse aluminum gooseneck about 16 to 18 foot in length. I would have to put a gooseneck hitch in the truck as well...is that something i can do to a F150?

 

Not recommended. You will probably exceed the truck GVWR before you will exceed the published max tow rating, which is dependent on cab type, options, and exact drive train. 5th wheel towing is only permitted with certain combinations. No 5th wheel is permitted with a SuperCrew.

Cab type?
2wd or 4wd?
Axle ratio?
GVWR on the door jamb sticker?
Size and load rating of the tires?

http://www.trailerlife.com/wp-conten...Guide-2003.pdf

 

Owning a 2003 my self you really need to look at the frame above the rear axle. It is by far the weakest frame Ford has ever put under any 1/2 ton. These were the weak years 1997-2003. Our policy at work is we will never install a bed mount hitch in a 1997-2003 F150.

Secondly an aluminum horse trailer is not significantly lighter than a steel trailer. In fact some cheaper made steel trailers are lighter than a quality aluminum trailer. So much more aluminum has to be added to the trailer to give it the strength of steel that the average weights between similar aluminum vs. steel trailers are usually 2-300lbs in a 3-4 horse GN trailer.

Lastly, after decreasing your load capacity by 200lbs of tongue weight from the weight of a GN hitch that will need to be installed on the truck, and knowing that a GN puts 20% of it's load on a tow vehicle, you will be over loaded with even a short 16' trailer.

Will it tow it. Short answer, yes. Not recommended though.

To get you max tow rating we need a little bit more info. Transmission type, axle ratio, cab length, bed length, 4x2 or 4x4 and tire size/type.